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Characterization of hearts from female hypomorphic mice. Hearts were obtained from 19- to 26-week-old female mice (n = 4–10) for analysis of cMLCK content (upper panel), MLC2v phosphorylation (middle panel), and ratio of heart weight to tibial length (lower panel). *, p < 0.05; **, p < 0.01; ***, p < 0.001 compared with values for cMLCK+/+ mice.
